Botanical profile

Rhododendron catawbiense 'Boursault'

Latin name
Rhododendron catawbiense 'Boursault'
Common name
Rhododendron catawbiense 'Boursault'
Type
Shrub
Family
Ericaceae

Rhododendron catawbiense ‘Boursault’, commonly known as ‘Boursault’ rhododendron, is an evergreen ornamental shrub with a broad and dense habit, recognized for its vigor and spectacular flowering. In spring, it produces generous clusters of lilac-purple flowers marked with darker shades at the center, creating a luminous effect in shaded beds. Its dark green, leathery, and shiny foliage remains attractive all year round and provides a solid winter structure. Very hardy and reliable, it adapts well to northern climates when planted in partial shade in acidic, organically rich, and well-drained soil. Rhododendron catawbiense ‘Boursault’ is perfect for foundation plantings, informal hedges, and large beds in acidic soil.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4
Exposure
Partial shade
Watering
Regular watering
Fertilization
Acid-loving fertilizer in spring. Fertilize monthly or as directed on the bag. Not recommended – use Bionik rooting agent or ground bone.
Soil type
Acidic, rich in organic matter and well-drained
Minimum temperature
'-28°C
Plant appearance

Blooming, foliage and shape

Blooming period
Spring
Flower color
Lilac purple
Fruiting
Dry capsules of no ornamental interest
Foliage color
Green
Foliage type
Persistent
Shape
Shrubby
Garden structure

Size and growth

Height
2 to 2.5 m (7 to 8 feet)
Width
2.5 m (8 feet)
Growth rate
slow
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

Hummingbirds
Flowers that attract hummingbirds

Hummingbirds

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.